Any descendant of Zerah, son of Simeon (Numbers 26:13). See Zerah #3.
Any descendant of Zerah, son of the Judah by Tamar (Numbers 26:20). See Zerah #2.
Zerahite
This term has multiple meanings in the Bible:
From Tyndale Bible Dictionary, adapted by Mission Mutual. CC BY-SA 4.0.